Enter a Domain
Type one public domain, such as moz.com. The checker requests a reported total and a limited domain sample from its current third-party source.
Use this referring domain checker to review a provider-reported count and limited sample of linking domains. No account required; not a complete backlink index or link-level report.

WHAT ARE REFERRING DOMAINS
Referring domains are unique websites a provider reports as linking to a target. One domain can send many backlinks while counting once in this metric. Counts vary by provider and crawl coverage. This checker returns a provider-reported count when available and a limited domain sample, not exact linking URLs or a complete backlink index.
Individual links from one page to another. A single domain can provide many backlinks, so backlink count and referring-domain count answer different questions. Value still depends on the exact page, relevance, placement, and other context.
Deduplicated domains found linking to the target in a provider's index. Each returned domain counts once in that dataset. The count helps describe source diversity but is not a Google metric or standalone quality score.
HOW TO USE
Enter one public domain to request the source's reported total and deduplicated domain sample. Use the referring domains list to identify backlink sources for further review. This checker does not return linking URLs, anchors, link attributes, or a complete new/lost history.
Type one public domain, such as moz.com. The checker requests a reported total and a limited domain sample from its current third-party source.
Review the provider-reported total and returned sample separately. A total larger than the sample reflects source coverage or display limits, not missing rows in the interface.
Open a returned domain and inspect the exact linking context with a full backlink tool. DR and Spam Score can add questions, but neither metric alone justifies outreach, rejection, or disavowal.
WHY CHECK
A referring-domain count and sample can show how many independent sources a provider found and which returned domains deserve deeper review. It cannot establish link quality, rankings, or a complete backlink history by itself.
Compare source diversity within the same provider and period. More domains are not automatically better; relevance, the exact linking page, placement, and editorial context still decide whether a link is useful.
Use returned domains to build a review list, then open each source and confirm the actual linking page before outreach. A limited domain sample is not a ready-made prospect list.
Save comparable observations separately if you need a trend. This checker does not provide new/lost history, and a count change can reflect provider crawl coverage rather than a real link change.
Use DR or Spam Score only as additional vendor clues. Judge a source from the exact page, topic, audience, editorial standards, placement, and real visibility—not a combined score threshold.
Enter one public domain to request a provider-reported count and limited referring domains list without an account or credit card. Coverage can be incomplete or unavailable and does not include link-level details.
FAQs
Related Website Metrics
Compare several third-party website metrics while keeping each provider, scope, and limitation separate:
Use the free DR checker for a current observation, compare domains in Bulk, or display the latest Stored DR from your Domain Listing with an optional badge.